T-Max Circuit Breaker, T5N 300-600 Amps, Current Rating 600A, Long Time, Short Time and Instantaneous protection functions, 3-Pole, Interrupting Rating Normal, Breaker Rating 80 Percent, Line Side Display 2 x 3/0- 500 KCMIL- Uses Extended Spread Terminals, Load Side Display 2 x 3/0- 500 KCMIL- Uses Extended Spread Terminals, Shunt Trip 110-125 VAC/DC